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When Naoto and Naoya were just kids, their parents knew something was different about them. One night, the two brothers were drugged and taken away to a special lab surrounded by an unbreakable barrier.
Naoto and Naoya were finally free from the lab. As they were driving away though, they got a flat tire. There was a bar nearby so the two brothers stopped to get help and rest.
In the bar, a woman touched Naoya causing him to see in her mind.
Naoya was still able to see the murders, but this time it was a vision of what was going to happen. The brothers decided to save the next victim's life.